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why does rainfall decrease from east to west in northern plain
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why does rainfall decrease from east to west in northern plain
The rainfall decreases from east to west in northern India because of the following reason: The inflow of the south-west monsoon into India is such that the windward side of the WesternGhats receives very heavy rainfall, more than 250 cm. Rainfall in the Ganga valley decreases from the eastto the west.

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why does rainfall decrease from east to west in northern plain
THE BAY OF BENGAL BRANCH OF SOUTH WEST MONSOONS MOVES TOWARDS NORTHEAST CARRYING MORE MOISTURE AND THRY GIVE HEAVY RAINFALL IN THIS REGION. AS THEY MOVE FURTHER TOWARDS WEST THRY CARRY LESS MOISTURE RESULTING IN DECREASE IN RAINFALL IN THE WEST
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why does rainfall decrease from east to west in northern plain
Introduction:
The rainfall pattern across the Northern Plain in India exhibits a decrease from east to west. This phenomenon can be attributed to several geographical factors and atmospheric processes that influence the distribution of rainfall in this region.

Topography:
The topography of the Northern Plain plays a significant role in the decrease of rainfall from east to west. The plain is characterized by the presence of the Himalayas in the north and the Thar Desert in the northwest.

Himalayas:
The Himalayas act as a barrier for the moisture-laden winds coming from the Bay of Bengal. As the moisture-laden winds from the east encounter the Himalayan mountain range, they are forced to ascend and cool down. This cooling results in the condensation of water vapor, leading to heavy rainfall in the eastern part of the plain.

Thar Desert:
The presence of the Thar Desert in the northwest further contributes to the decrease in rainfall from east to west. The desert creates a rain shadow effect, where the moisture-laden winds coming from the Arabian Sea are unable to reach the western parts of the plain. The Thar Desert acts as a barrier and hinders the progress of these winds, causing them to lose moisture content.

Monsoon Winds:
The direction and strength of monsoon winds also play a vital role in the rainfall distribution across the Northern Plain. During the monsoon season, the prevailing winds blow from the southeast to the northwest. These winds pick up moisture while crossing the Bay of Bengal and bring heavy rainfall to the eastern part of the plain. However, as these winds move further west, they gradually lose their moisture content due to the topographical barriers mentioned earlier.

Conclusion:
The decrease in rainfall from east to west in the Northern Plain can be attributed to a combination of factors such as the topography, presence of the Himalayas and Thar Desert, and the influence of monsoon winds. These factors create a unique rainfall pattern, with heavier rainfall in the eastern part of the plain and drier conditions in the western regions. Understanding these geographical and atmospheric processes is crucial for studying and predicting the rainfall distribution in this region.
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Question No. 53 to 58 are based on the given text. Read the text carefully and answer the questions:The northern plain has been formed by the interplay of the three major river systems. This plain is formed of alluvial soil. The deposition of alluvium in a vast basin lying at the foothills of the Himalaya over millions of years formed this fertile plain. It spreads over an area of 7 lakh sq. km. The plain being about 2400 km long and 240 to 320 km broad, is a densely populated physiographic division. With a rich soil cover combined with an adequate water supply and favourable climate it is agriculturally a productive part of India The Northern Plain is broadly divided into three sections. The Western part of the Northern Plain is referred to as the Punjab Plains. Formed by the Indus and its tributaries, the larger part of this plain lies in Pakistan. The Indus and its tributaries - the Jhelum, the Chenab, the Ravi, the Beas and the Satluj originate in the Himalaya. This section of the plain is dominated by the doabs.The Ganga plain extends between Ghaggar and Teesta rivers. It is spread over the states of North India, Haryana, Delhi, U.P., Bihar, partly Jharkhand and West Bengal to its East, particularly in Assam lies the Brahmaputra plain. The northern plains are generally described as flat land with no variations in its relief. It is not true. These vast plains also have diverse relief features. According to the variations in relief features, the Northern plains can be divided into four regions. The rivers, after descending from the mountains deposit pebbles in a narrow belt of about 8 to 16 km in width lying parallel to the slopes of the Shiwaliks. It is known as bhabar. All the streams disappear in this bhabar belt. South of this belt, the streams and rivers re-emerge and create a wet, swampy and marshy region known as terai. This was a thickly forested region full of wildlife. The forests have been cleared to create agricultural land and to settle migrants from Pakistan after partition.Q.Assertion (

Read the source given below and answer the questions that follow:The cold weather season begins from midNovember in northern India and stays till February. December and January are the coldest months in the northern part of India. The temperature decreases from south to north. The average temperature of Chennai on the eastern coast, is between 24° C - 25° Celsius, while in the northern plains, it ranges between 10°C and 15° Celsius. Days are warm and nights are cold. Frost is common in the north and the higher slopes of the Himalayas experience snowfall.During this season, the northeast trade winds prevail over the country. They blow from land to sea and hence, for most parts of the country, it is a dry season. Some amount of rainfall occurs on the Tamil Nadu coast from these winds as, here they blow from sea to land.In the northern part of the country, a feeble high pressure region develops, with light winds moving outwards from this area. Influenced by the relief, these winds blow through the Ganga valley from the west and the northwest. The weather is normally marked by clear sky, low temperatures and low humidity and feeble, variable winds.A characteristic feature of the cold weather season over the northern plains is the inflow of cyclonic disturbances from the west and the northwest. These low-pressure systems originate over the Mediterranean Sea and western Asia and move into India, along with the westerly flow. They cause the much-needed winter rains over the plains and snowfall in the mountains. Although the total amount of winter rainfall locally known as ‘mahawat’ is small, they are of immense importance for the cultivation of ‘rabi’ crops.Q. In the cold weather season of winter, the temperature decreases from

Question No. 53 to 58 are based on the given text. Read the text carefully and answer the questions:The northern plain has been formed by the interplay of the three major river systems. This plain is formed of alluvial soil. The deposition of alluvium in a vast basin lying at the foothills of the Himalaya over millions of years formed this fertile plain. It spreads over an area of 7 lakh sq. km. The plain being about 2400 km long and 240 to 320 km broad, is a densely populated physiographic division. With a rich soil cover combined with an adequate water supply and favourable climate it is agriculturally a productive part of India The Northern Plain is broadly divided into three sections. The Western part of the Northern Plain is referred to as the Punjab Plains. Formed by the Indus and its tributaries, the larger part of this plain lies in Pakistan. The Indus and its tributaries - the Jhelum, the Chenab, the Ravi, the Beas and the Satluj originate in the Himalaya. This section of the plain is dominated by the doabs.The Ganga plain extends between Ghaggar and Teesta rivers. It is spread over the states of North India, Haryana, Delhi, U.P., Bihar, partly Jharkhand and West Bengal to its East, particularly in Assam lies the Brahmaputra plain. The northern plains are generally described as flat land with no variations in its relief. It is not true. These vast plains also have diverse relief features. According to the variations in relief features, the Northern plains can be divided into four regions. The rivers, after descending from the mountains deposit pebbles in a narrow belt of about 8 to 16 km in width lying parallel to the slopes of the Shiwaliks. It is known as bhabar. All the streams disappear in this bhabar belt. South of this belt, the streams and rivers re-emerge and create a wet, swampy and marshy region known as terai. This was a thickly forested region full of wildlife. The forests have been cleared to create agricultural land and to settle migrants from Pakistan after partition.Q. The northern plain has been formed by the interplay of the three major river systems. Name the rivers.

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